Try removing InTune (TuneIn?) from your music services in the Sonos app and re-adding it.

Thanks for the advice, there is something changed because I hear now a tune in intro when starting the radio, but it still starts with a wrong radio station and then goes to the right station in 10 seconds.

How about sharing which station you are having trouble with? Looks like you are in the Netherlands which may make it trickier for any of us to repro this.

I choose “NPO Radio 2” and when I add it to My Radiostations it show up as “Radio 2 92.2 (Pop)”.

I have the idea that Sonos starts with something like Radio 2 Berlin and the switch to the proper station.

I don’t want to bother you all to much, so leave it as you can’t help with Dutch stations.

“NPO Radio 2” works just fine from the USA. (Well as far as I can tell, I don’t understand Dutch).